Gas engine



Dec. 22 1925 1,566,843

R. E. DU BE GAS ENGINE Filed April a, 1925 2 sheets-Sheet 1 INVENTOR Pfg 0f/5E,

WITNESSBS ATTORNEYS Dec. 22, 1925- R. E. DU BE GAS ENGINE Filed April aa 1925 v2 Sheets-Sheet 2 La I WITNESS INVENTOR gDc/Eg;

@y #wf-SMQ 1w/MM@ Pntenteilec. 22, UNITED STA-TES PATENT'poi-Fica To all lwhom it may concern:

resident of Denver,

Engines, of which the following is has for its object the the combustion chamber and at right angles f features of the invention mmm. Encan DU im, oir nmrvnn, comme.

' Gas .'aiircmm.-v Y

Application mea prix 8,1925. serial' mi. 21,048.

Be it known that I, RAPHAEL EDGAR DU Bn, a citizenfof the United States, andv a in the county of Denver and State of Colorado, have invented certain new and useful Improvements in. Gas

a specifcation. This inventionxelates to an internal com bustion engine of the horizontal type and provision ot an engine having opposed pistons'working in a single cylinder with the combustion chamber bem located between the pistons so that the expansion stroke will be' simultaneous for botli pistons to drive said pistons in opposite d1- rections and rotate a single crank shaft.

Another object of the .invention is the provision of an engine having a combustion chamber between a pair of opposed pistons which 'through rock levers and links operate asingle crank shaft located directly below to the axis pistons.

A further object of the invention is the provision of an engine having a single cylinder and opposed pistons, with thecolnbustion chamber disposed between the p istons so that an explosive charge will drive both pistons forl of the single cylinder for the with greater power.

A still further object of the .invention 1s tlie provision of an engine havin opposed `pistons'a'cted upon at each expansion strokev Vfor driving a single shaft and in which rock levers are provided for transmitting the Y wer stroke to the crank shaft, the levers A,that

ving their arms oiset in sucha manner a minimum of house the engine.

This invention will be best understoodr of thefollowing dein view of the accom line no material 'departurefrointlie 'salient yas expressed in the aptended claims. 1 In e'drawings, M. 1 Figure 1 is a longitudinal .vertical -section of the engine.

'the upper section o rotating a single crank shaft thereby providing for a saving 1n fuel '1 to space is required to vl forming a part of the being susceptible of- 'suchchanges and modifications which'shall de Figure 2 yis a vertical section of the engine taken along the line 2 2 of Fig. 1.

Figure 3 is a view in perspective of a rock lever mounted at each end of the engine.'

Figure 4 is a crank shaft.

Figure 5 is a perspective view of the cam shaft.

Referring more particularly to the drawings a frame is shownv for supporting a horizontal cylinder 1. The frame may be g cast integrally with the cylinder or made separately and the cylinder bolted to the frame.. The frame consists of pairs of end standards 2 and 3 provided each with a bracket 4 having bearings 5 to support a rock shaft 6 or 7. Integrally formed with the standards at their lower ends are a pair of arcuately shaped beams 8 having bearings 9 intermediate their ends. The bearings are split as is usual in order that a crank shaft, 10 mounted therein may be sired.A Bolts 11 are provided for fastening the bearing and for ladjusting said section relative to the lower section.

The upper ends of the standards 2 and 3 are connected by transverse bars 12 curved to conform lto the curvature of the cylinder receive said cylinder adjacent its ends.

ransverse bars 13 connect the lower ends of the standards together.`

A piston rod 14` is connected at one end to a wrist pin 15 carried by a reciprocating piston 16 mounted in one end of the cylinder, the otherA end of the rod being provided with a fork 17 pivoted at 18 to the upper arm 19 of a rock lever 20. Therock ever has a journal 21 carried by the rock shaft 6. e lower arm 22 of said lever is pivotally connected at 23 to a fork 24 at one end of a link 25, the other end of the link being connected to a crank 26 on the crank lshaft 10. A rod 27 connected at one end to a wrist `Ipin 28 carried bya piston 29 opposed to the view in perspective of the at an angle to crank 26'so mated.

link and is connected to a crank 39 set that at no time be a dead center for the engine; due to 'carrying-the pisbe entirely elimiwill there thus the resistance tons oit' dead center will A combustion chamber 40 is loeated'in the cylinder 1 between the heads v41 and 42 of the respective pistons 16 and 29 and during respectively.

. seat 48 forming an intake port of the pasir:1 e aust passage 56. l spring 50 engages a 45 of said boss. A spring end vby 'a bearing 51 on a other end by the head 45 sage 49 in the head 50 engaged at one stein 52 and at its maintains the intake valve on its seat.

A'spring 53 on a' stein 54-of the exhaust valve 46" retains said valve on a seat 55 forman exhaust port at the inner end of the The spring 53 like the bearing 57 at one end on the stem 54, and at its other end the head 45 of the boss 43. i

A spark plug opening in the 58 is screwed into a threaded head 45 of said boss and is electrically connected' in the usual manner with an ignition system (not shown).

The intake valve 47 is operated through a tappet 59 pivoted at Y 60 to a bracket 61 rising from the head 45 of the boss. A tappet 62 lactua'tes the -valve 46 and is likewise pivoted on the pin 60` carried by the bracket 61. A link-63 is pivoted at its upper end to the tapp'et while a link 64 is pivote at its upper end to the tappet 62. r A gear 65 on the crank' haft 10 drives a ear -66 on a cam shaft..67 mounted in bearings 68 supported by the frame. A cam 69 on shaft v67 engages the 'rod or link 64 for reciprocating the sameto actuate the exhaust yalve 46 while a cam 70 causes reciprocation of the rod or link 63 for actuating the ciated .that

intake valve 47.

Itwill be noted that the rods 63 and 64 are on oppositev sides mounted inv bearing movement.

Any number of c lindersI may be placed alongside of each ot er and their pistons so cooperatingly related'in positions that certheir compression stroke while others may be completing their expansion stroke. It will be apprethe strokes of the piston will be determined by the angular setting 'of their respective cranks on the crank shaft.

ior vertical sliding The operation of my device is as follows-zv The crank shaft 1 0' is revolved vin any apf The intake vvalve engages a', vthat is one cra only a great economy in of the. cylinder and'v lcasing may be proved manner causing reciprocation of the site directions, the levers 19 and 32 throu li the respective .links'i25 and 38 are moved inwardly and outwardly driving the crank shaft 10. both links pushing or manner.A The an chamber .40` lie-- 16 and'29 and" 7.'.l apart rocking simultaneously vbut in oppopiston rods 14iand 27. el(

8 0 pulling in' a. coordinate ar setting of the cranks,

- disposed slightly above the horizontal and the 'other crank slightly below said horizontal.. ,Byboth pistons being directions by the sainelexplosive fuel pistons aredriven wit equal -force to revolve the Crank shaft.

The gears 65 and 66 are so operated simulta' eously iii -opposite A charge, not is had butgreater power output resultsl since vboth timed andA the I i cams 69 and 70 so'placed that the exhaust and intake valves will be properly actuated during the ies ecti've exhaust andsubtion: strokes for the proper operation of the enl gine. The opposite arms and 33 are offset from '-onlya com act 'and eliicient engineishad pllaced in e width the disposition of the frame but the li 25 and 38"may be close associations for restricting of the device.- Furthermore of the rock Vlevers at the ends provides for a. large leverage in operating d. .the cranks of the crank running en 'ne.

A casing 5 completely rock levers and crank may be made in sectionssothat the sections maybe readily removed for inspection and repairs.

nected to the upper ed es ofthe .casin curved at its' inner en as vshown-at conform tothe and secured to said cylinder at these poin A water jacket no partof the present invention the same'has been omitted. v The casingv 78 embraces vthe cylinder:- adjacent the combustion chamber and isconcooling system for the 1 of the rock leversf'i-QO -I each other so that n ot im' encloses the frame, haft. The casing ilo Cover plates 76 are removably conand 7 to curvature ofthe cylinder- 52.115

7 5 is supplied ing oil at a predetermined level and the oil all vthe moving parts in the The levelA of the oilin said such that the crank shaft and is carried to usual manner.

gears 65 and with lubrication by the s lash system.

By theconstruction ,o the two e6 may be directly supplied' tudinal and arcuately moving sion chamber being progressively affected, a higher compression is obtained than ,when a single piston is employed in a cylinder.

I claim:

1. In an internal combustion engine, a horizontal cylinder, opposed pistons mounted in said cylinder, a frame supporting the cylinder, a rock lever mounted at each end of the frame, the upper arm on each lever being offset from the lower, the corresponding arms of the levers being located in different vertical planes, a shaft provided with a plurality of cranks, Ia rod connecting a crank with a lower arm of a rock lever, a piston rod connecting the upper arm of each rod With a piston, a caslng enclosing the frame, crank shaft, and cove;` plates conforming tothe curvature of the cylinder and connected to said, cylinder and casing.

2. in an internal combustion engine a horizontal cylinder, a frame supportin said cylinder and comprising a pair of Ongishaped beams, a pair of standards rising from the opposite ends of said beams, a plate connecting a pairl of the standards at the ends of the frame and curved to conform to the curvature of the towards each. other'in a single cylinder mechanism, a decreasing compresb standards atthe ends-of the* said cylinder, o rackets extending outwardly from the standards, a shaft mounted in each pair of brackets, atrock lever carried by each shaft, pistons in the cylinder, means connectin a piston with a lever, a crank shaft and 35 -means connecting each lever with the crank shaft whereby said shaft is revolved.v Y

3. In an internal combustion engine a horizontal cylinder, a frame supporting said cylinder and com rising a pair of lon tudinal and arcuate y shaped beams, a pair of standardsrising from the opposite ends of said beams, a plate connectingU plait' of the ame and curved to conform to the curvature of the cylinder for receiving said cylinder, brackets extending outwardly from the standards, a shaft mounted in each pair o brackets, a rock lever carried by each shaft, pistons in the cylinder, means connecting a piston with a lever, a crank shaft and means connecting each lever with the crank shaft whereby said shaftis revolved, a housing enclosing said frame, crank shaft andV rock levers, and a removable cover plate connected to each 55 end of the cylinder and the housing.

RAPHAEL `EDGAR DU BE.

cylinder for 'receiving 

